The Sapphire is our stylish new lightweight classroom microphone. So small, it’s hardly noticeable to wear. It can be worn with a lanyard or clipped directly to your neckline collar. Performance: The Sapphire’s vocal clarity is unsurpassed. It boasts high level output, reliable connectivity and exceptional definition. With a built-in breath filter, the Sapphire can function as a pass-around hand mic. The IRT-60 has security alert, holding down the priority button for five seconds activates a contact closure.